1 star for visual effects, the other for the actors, both tried their best but there's only so much you can do for a movie with such awful dialog, pacing, and general direction. I honestly don't even care about the ripped off scenes, it can be said that taking from other sources, especially many different ones, can make for a good story if you do something new with them, use them to tell your own story. But they're not used for anything at all here, even a straight rip off might've been more entertaining but instead we get an endless series of loosely connected beats with no connection to eachother, characters whose thoughts and feelings flip completely from one sentence to the next as necessary to create brief scene they were needed for.
This is a movie directed like a long series of trailer clips, pretending to be a story, it can't really rip anything off because it's nothing. I feel bad for the people whose careers are surely damaged by their involvement with them, these actors have been made to look bad even in cases they're not because the dialog written for them is so nonsensical and disconnected, they can't possibly play characters that don't even exist in concept. Zack Snyder should find new work as an idea guy in the writing room that reminds people cool scenes exist, leave writing and directing to people who could write two paragraphs without undermining the character in it.